The Vertex has a refined six face faceted design that looks like it belongs in an engineer's office. The single barrel tube is 3 inches long showing off the blank material. The click mechanism is super smooth and almost noiseless. These pens look great in a variety of acrylics and finely figured woods. Platings available include 24kt Gold, Chrome, Gun Metal, and Brushed Satin. It uses a Parker style refill.